# math

posted by .

I want to know why [5-5cos(square)(filter)] is equal to [5sin(square)(filter)]
Do you guys know what I mean? sorry for that I can't type (square and filter) signs

• math -

First of all, what is this "filter" you are talking about?
Is "filter"supposed to be a variable.
I will assume that it is, and will replace it with x
so you state
5 - 5cos √x = 5sin √x
Secondly, this is not true for all x's as you state.
All I need in one counterexample to show the equation is not true as an identity.
e.g. let x = .25
LS = 5 - 5cos √.25
= 5 - 5cos .5
= .621...
RS = 5sin √.25
= 5sin .5 = 2.39...

Are you solving the equation?
Let me know before I get into that.

## Similar Questions

1. ### Physical Science Question 1

What type of light passes through a polarizing filter?
2. ### Physics

If the critical frequency of a low-pass filter is 5 kHz, what is the filter bandwidth?
3. ### Calculus

A cone-shaped coffee filter is draining at a rate of 20 in^3 /min. The filter has a diameter of 8 inches. the radius of the filter is 2/3 the height. how fast is the coffee level falling when the coffee is 3 inches deep?
4. ### Mathematics Ms Sue help

A high pass filter with a cutoff frequency of 250 kHz is placed in a circuit after a low pass filter with a cutoff frequency of 150 kHz. Together, these filters create which type of filter?
5. ### Excel Filtering

Hi I'm trying to filter data between 3 different columns. I want it so the data filtered so data in column a is smaller than column b, which is smaller than column c. I try to filter but it only allows me to use filter criteria from …
6. ### science

What type of prac do you think you need to use a filter funnel and filter paper. please help quickly
7. ### Technology

the filter feature excel allows you to look at what data?
8. ### Technology Education

the filter feature excel allows you to look at what data?
9. ### Electronics

Is a circuit a bandpass filter only when it's a high pass filter followed by a low pass filter?
10. ### math

Janine is considering buying a water filter and a reusable water bottle rather than buying bottled water. Will doing so save her money?

More Similar Questions